I definitely think that in the linear power supply "world" this has more merit than in the switch mode power supply "world" as is typical of class d amps such as ICE and Hypex.
The bigger problem with the switch mode power supplies (hence the moniker SMPSXXXX for Hypex versions) is the switching itself which introduces a different kind of distortion - or has the potential to anyway - to the audio signal.
In any case, I also read that Stereophile was no longer doing test bench measurements - how lame is that - I'd be interested in other opinions on so-called cross talk in a configuration such as a Hypex SMPS 3Ka400/700 with three channels of switch mode power delivered on a single "board" - you'd think that they've thought about the crosstalk potential and engineered it out - as there is only one AC mains input (set of faston tabs). But on linear circuits we're in agreement.
If you share a power supply there is increased capacity for crosstalk..
The bigger problem with the switch mode power supplies (hence the moniker SMPSXXXX for Hypex versions) is the switching itself which introduces a different kind of distortion - or has the potential to anyway - to the audio signal.
In any case, I also read that Stereophile was no longer doing test bench measurements - how lame is that - I'd be interested in other opinions on so-called cross talk in a configuration such as a Hypex SMPS 3Ka400/700 with three channels of switch mode power delivered on a single "board" - you'd think that they've thought about the crosstalk potential and engineered it out - as there is only one AC mains input (set of faston tabs). But on linear circuits we're in agreement.